2001 Breeding Herd Summary- Australia
Measurement	Median	Median to Median +1STD	>Median +1STD
BREEDING PERFORMANCE
Repeat Services, %	11.5	12.7	7.7
Multiple Matings, %	92.8	94.7	97
Entry-to-first-service interval, days	35	46.9	39.4
Sows bred by seven days, %	88	90	90.3
Weaning-to-first-service interval	6.25	6.2	6.05
Average nonproductive days	63	71	54
FARROWING PERFORMANCE
Average gestation length	115	115	114
Average parity of farrowed sows	3.2	3.2	3.2
Farrowing interval	147	147	144
Farrowing rate, %	73.6	75.8	79.1
Average total pigs per litter	11.3	11.5	12.0
Average pigs born alive/ litter	10.4	10.6	11.0
Average stillborn pigs	0.7	0.7	0.6
Average mummies per litter	0.1	0.2	0.3
Percent <7 bornalive	9.6	9.8	6.7
PWM for farrowed and weaned	12.8	12.8	10.0
Litters per female per year	2.2	2.0	2.3
Litters per mated female per year	2.3	2.3	2.4
Old litters/mated females/year	2.2	2.2	2.3
WEANING PERFORMANCE
Pigs weaned per litter weaned	9.0	9.3	9.7
Average age at weaning	21.8	21.9	21.3
Pigs weaned per sow	8.9	9.1	9.9
Pigs weaned/ mated female/ year	20.4	21.4	23.5
Old pigs wnd/ mated female/ year	19.3	20.3	22.4
Pigs weaned/ female/ year	19.4	19.6	22.4
Pigs weaned/ lifetime	32.5	29.5	36.0
POPULATION
Average female inventory (AFI)	369	354	450
Average gilt pool inventory	20	26	32
Sow: Boar Ratio	19	20	21
Average parity	2.5	2.5	2.5
Replacement rate, %	56	61	47
Culling rate, %	39	38	40
Death rate, %	5.7	8	5.7
Average parity of culled sows	4.0	3.6	3.9
#Farms Included= 56     Median (based on Pigs Weaned/ Mated Female/ Year) = 20.4    STDEVP= 2.78